Universal all-optical logic gate reaches 240 GHz at room temperature, enabling optical computers running 100's of times faster
https://phys.org/news/2025-04-universal-optical-logic-gate-ghz.html "universal NOR logical element based on polariton condensates, operates at room temperature, completely optical, has multiple inputs, reproduced/ connected in circuit... bimolecular quenching key role limiting polariton transistor speed, requires sufficiently depleting residual polariton population from previous 1 or 0 logic state... polariton delocalization leads to additional losses... optimal performance: pump pulse duration must be shorter than relevant processes' characteristic times"